What does cat hair on stockings in a dream mean?
It means that you have dreamed of cat hair on stockings.
Dream interpretation is personal; what matters, what is important, is what the imagery means to you.
This dream might mean nothing more than being aware of the cat's presence as you sleep. Any deeper significance would depend on the actual content of the dream. For example, dreams of quietly sitting, petting the cat in your lap would have a different interpretation from a dream of frantically chasing your cat through high tree tops.
It means that you have dreamed about a cat that you know. Dream interpretation is always very personal; there is no universal meaning that can be applied to symbols in your subconscious. To determine the meaning of dreams, you must interpret the symbols yourself. What does this cat mean to you, personally?
The dead or injured cat in the dream represents something with the qualities of a cat that has been "killed" or injured. What the cat represents depends on the individual dreamer, and their feelings and associations about cats. For example, a worker in a factory making "Caterpillar" bulldozers might dream of a dead "Cat" after losing that job.
This dream probably expresses your love and concern for your beloved cat. You might be feeling somewhat ill yourself, and your mind uses the cat to represent you in the dream. On the other hand, your cat might not be as energetic as usual, and your subconscious mind might have noticed subtle signs that your conscious mind missed. The dream could be your subconscious mind alerting you to notice something is amiss.